body {
  margin: 0;
  padding: 0;
  background: #607D8B;
}

.box {
  position: absolute;
  top: calc(50% - 100px);
  left: calc(50% - 135px);
  height: 200px;
  transform-style: preserve-3d;
  transform: perspective(1000px) rotateY(45deg);
}

.box div {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  display: flex;
  transform-style: preserve-3d;
}

.box div span {
  position: relative;
  display: block;
  width: 50px;
  height: 100%;
  background: linear-gradient(#e8e8e8, #a7a7a7, #e8e8e8);
  animation: animate 2.8s linear infinite;
}

@keyframes animate {
  0% {
    transform: rotateX(0deg);
  }
  100% {
    transform: rotateX(360deg);
  }
}

.box div span::before{
  content: '';
  position: absolute;
  display: block;
  width: 100%;
  height: 100%;
  background: #000;
  transform-style: preserve-3d;
  transform: translateX(-25px) scaleY(.5);
}

.box div span:nth-child(1){
  animation-delay: 0s;
}

.box div span:nth-child(2){
  animation-delay: 0.2s;
}

.box div span:nth-child(3){
  animation-delay: 0.4s;
}

.box div span:nth-child(4){
  animation-delay: 0.6s;
}

.box div span:nth-child(5){
  animation-delay: 0.8s;
}

.box div span:nth-child(6){
  animation-delay: 1s;
}

.box div span:nth-child(7){
  animation-delay: 1.2s;
}

.box div span:nth-child(8){
  animation-delay: 1.4s;
}

.box div span:nth-child(9){
  animation-delay: 1.6s;
}